Submission #391239

#	Time	Username	Problem	Language	Result	Execution time	Memory
391239		keta_tsimakuridze	Growing Vegetables is Fun 4 (JOI21_ho_t1)	C++14	100 / 100	95 ms	6920 KiB

Main

#include<bits/stdc++.h>
#define f first
#define int long long
#define s second
using namespace std;
const int N=2e5+5,mod=1e9+7,Inf=1e15;
int t,n,ans,pref[N],suf[N],a[N];
string s;
 main(){
	// t=1;
	cin >> n;
	ans = Inf;
	for(int i=1;i<=n;i++){
		cin>>a[i];
		if(i-1) pref[i] = pref[i-1] + max(0ll,a[i-1]-a[i]+1);
	}
	for(int i=n;i>=1;i--){
		if(i!=n) suf[i] = suf[i+1] + max(0ll,a[i+1]-a[i]+1);
		ans = min(ans,max(suf[i],pref[i]));
	}
	cout<<ans;
	
}

Compilation message (stderr)

Main.cpp:9:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    9 |  main(){
      |       ^

• Subtask 1: 40 / 40
• Subtask 2: 60 / 60